Self-balancing sifter.



A. c. BRANHNGHAM.

SELF BALANCING SIFTER.

APPLICATION FILED DEC 20. 1915- 1307547. Patented 1m. 12,1916.

2 SHEETS--SHEET I.

A. U. BRANTINGHAM.

SELF BALANCING SIFTER.

1,2o7;847' I APPLICATION FILED DEC- 20. 19!.5. Patented Dec. 12 2 SHEETS-SHEET 2.

8 2. Suva H601: v

till

iii]

t ti

" u i Bifiinlln M t l, .hnten to llilnen'rriete ten oi the United titates oit dine; at 'ltoledo, llrueas county, in ntnnll. a new and useful fideliti at at, oilt "Which the following is a epeoilieatioit tllh" iuirerution relates to driving and con tlftd peeiaily "tor sitters,

'ilhis irirenuion has utility "when incorpor ated in dririn and control deriees itor ee real eraders oct "he freely gyratinp type.

lth erring to the drawings: ll ipgure tie a W, s elera with parts hrolren away oilt an ernhodin t oi the invention in a high heat type oi? selit halaneing gyratory sitter itor grading" tinely divided inaterial as flour; i t is a plan "view ol the adjustable throW gyrator deriee or :tlyweight, With the parte dispo 'id in closed or quiet position; ti nentary' View of the drive and con-- t is a plan View oclt the coin jlittUlL oit lfiiez 3 showing the prnnts in ed or runniu position, he ii or on the line li -Al 3; ilhi 5 is a on. on the line "V -"l l i it; 6 is a tail of the anti-friction. rnountingtor the t; and Fig. i is a view on the line ill" lhigu 6,

l lhheorn the stationary support l the heart hle reeds raj i carry the sitter tor freedom haunt as travel in an orbit, or pyrae stoeh to he treated nip he delii to the eitter 3 hp i'leirihle tuhes land eriall. theretroin discharged to irihle tuoes fitentrall g mounted in the sitter El is the rotary shaft Eh the welgght of which is can ried hp the sitter through i and the heme liast on the shalft 6 and eoneentrie tl with is the pulley it to "which my entend helt 11.0 to paes over the angle n adju l le idlers ill arially spaced :iona the "hill 2' 1 hp the etrut or torlred vererred hraclret lit l3" 'lChe hraehet pin it iarryinp; the roller for on. in the slot or poolret it of the uildinrr, as the :lloor in the noill. The T has no support in the slot "l6 hut lit eguided therehp' and may have this anti m lotion side travel minimiaed hp a hihriearnt in the pochet "l6" 'lt'hese idlers hesidee hehi titled Ililleeeniher lhl, Iltlth the step hearing a e l'l' eunzhored to the fired part initially spaced to the lll'jlilitiltlil lldt l: lliltl ih "it"lEItil'tiilHLttJltt, till? 'llllilllldlllfl, UHIIEU, .htl'lti'llti'rlhl'tllili 'lltil 'jllil'lfllttlll lll'lliilii ti: h lll l.IIEtJltL'llldtili jtl fitlfiw wraith .tpeeiiieation of Letters IIEatent.

tr e

ll atented lli eem 'lltlt, "llltlil dm Iterial nu ttlh'ltltt pulley 9, are niorahle relatively to the sitter or hoot hut are carried by said her 3 through the hrachcts l2, 13. in this drive eonneetion the idlers may he adjusted to o leading on or oit' the pulley 18 at "ed angle Witlunit hating the Whole helt interfere With the uniform orhital trarel or gyration of ti sitter 8. ltotation at the pulley and through it of the ehaitt h 'Wmilril normally aeeorn h no eontrol or dririnp; action as to the at. er 3. However, mounted on the shaft 6 are a pair of gyrator derioee each inehidinp; a til-shaped the weight it) coactinpg with an opposing tlshaped holder 20 for fully embracing; the ehatt 6. Fast on the shaft 6 is a yoke 21 carrying a pair ot guides; 22, which yoke 21 and guides '22 form a third li -shaped derice. The guides eoaet "with the anti- ;trietion rollers 23 mounted. in the cages 23 in the tlyn eight device 19 permitting ready lial tra fl oi? this ilyweipght it) as to the u all: l. he til d riee carries the Weight 19, While the We. at it) carries the til device 20. The eent ltupnl action oi the flyweight i9 is resisted. hy the compression spring 24 acting hetween the ti devices 20, EZL'While the maximum throw of the fiyweight may he positively adjusted by the not 525 on the stop stern. 26 carried lay the tl-shaped holder 20.

shaft 6 through the pulley 9, its the shaft 6 speeds up, the center of gravity oil-the fly- Weights 19 being slightly eecentrie or the axis of rotation ofthe shatt 6 has its momentum increase to overcome the resistance of the compression or retrieving spring 24 and as these tlyweights'hegin to more away from the shaft 6, their mass on that side of the shaft 6 increases for as the radius to center ot gravity increases,the leg portions 29 or the l..l-tlyweight more over to supplement the action of the major portion of the Weights l9. rlrccordingly, in the adjusted normal travel, the flyweights 19 have an increased controlling inass when. up to speed and due to this mass eccentrie oi the shaft 6, the

shaft 6 is coinpelled to travel in an orhit.

This travel in an orhit oi the rotating shatt vdriving means for ley normally gyratable with the body, a belt,

6 carries with it the non-rotating sifter 3 giving the shaking action to effect the treatment of the stock. Accordingly, in the normal operation of the machine the pulley 9 is gyrating. However, the Whips of the reaches of the belt 10 are minimized in the modified movements of the guide pulleys 11 for the roller 15 travels to and fro instead of in an orbit like pulley 9. Thus there 1s distribution of the travel of the pulley 9 in its effect upon the belt 10 from the. driving source of the fixed pulley l8.

In the driving and control of the sifter there is no rigid connection between the sifter and its building or supporting structure, and the control lunges or vibrations of the sifter may not be transmitted as concussion to disturb the building, or react to modify the gyratory travels.

The maximum throw adjustment of the sifter may be readily modified by adjusting the stem 26 or the loading of the fiyweights 19, while a variation in the stock loading of the sifter 3 will be taken up in the machine travel itself. However, this variation in the load of the sifter need not modify the effec-.

tive action of the sifter with the controlling mass of the flyweights of suflicient momentum to maintain mastery up to the adjustment of the stop 26.

What is claimed and it is desired to secure by Letters Patent is:.

1. A freely supported body, and drivingmeans for the body including a shaft, a fiyweight on the shaft adjacent the body, a pulley on said shaft concentrically mounted as to the body, said pulley being disposed on the side of the fly-weight away from the body, and a shaft engaging frame extending from the body to the shaft beyond the pulley from the body.-

2. A freely supported body and drivingmeans for the body including a fiy-weight, a rotary shaft concentrically mounted as to the body, a pulley on the same side of the fiy-weight and body concentrically mounted on. the shaft, a driving belt for the pulley and guiding means for the belt axially spaced from the pulley and movable relatively to the body, said guiding means engaging the shaft on the side of the pulley remote from the fiy-weight.

3. A body supported for gyration and driving means for the body including a flyweight, a pulley on the same side of the flyweight and body, and normally gyratable with the body, a belt for the pulley, and guiding means for the belt movable relatively to the body, said guiding means engaging the shaft on the side of the pulley remote from the flyweight.

4. A body supported for gyration and the body including a pulfor the pulley, and guiding me'ansfor the 7 body,

an axis of rotation,

. means for having an axis of bearing for the shaft carried by the body,

' '11. A body supported belt automatically movable relatively to the body. 1

A body supported for gyration and means for gyrating the body including a member coacting with the body'and having a support below the body for the member, an adjustable weight rotatable with the member and movable to a plurality of positions as to said member, and a single adjustable compression spring to resist weight movement,a portion of said weight being disposed for opposite control action at one position to its control action at another position.

6. A body supported for gyration and gyrating the body including an member coacting with the body rotation, a flyweight of increased controlling mass as its momentum increases, and a single adjustable compresadjustable said guiding means carried by the sion spring coacting. to resist momentum inmeans for gyrating the body including a member coacting with the body having an axis of rotation, an adjustable flyweight of decreased controlling mass as its effective radius decreases, and a radius increasing resistance offering single adjustable compression spring for the fiyweight;

8. A body supported for gyration and means for gyrating the body including a member coacting with the body and having an axis of rotation, an adjustable fiyweight having its center of gravity disposed for outward travel from the axis of rotation of the member, and a single adjustable compression spring carried by the member on the opposite side of said axis of rotation for acting upon the weight.

9. A body supported for gyration, a rotatable member coacting with the body, an adjustable relatively movable flyweight device therefor having its center of gravity apher than the outer edge of the flyweight on a line through said axis and center of gravity and a single adjustable compression spring for resisting outward fiyweight travel.

10. A body supported for gyration and driving means for the body including a, shaft having a pulley thereon and a step said bearing being below the pulley.

for gyration, and

driving means for the body includin a shaft, and a driving pulley for the sha t, a

frame carried by the body and extending therebelow, and a step bearing in the frame for the shaft, said bearing being below the pulley.

. 12. A body supported for gyrationand driving means for the body including a belt,

guiding means for the belt, and a travel limiting device for the means independent of the support for the means.

13. A body supported for gyration and driving means for the body including a belt, I

guiding means for the belt, a supporting bracket including a pair of vertically spaced arms connected to gyrate with the body, and a travel limiting device for the means inde- 10 pendent of the body.

14:. A body supported for gyration and driving means for the body including a belt, guiding means for the belt eccentric of the driving means, and :1 travel limiting device tor the guiding means indepei'ident of the support for the guiding means embodying a hxed way having a lateral directing face forming the side Walls of a lubricant chamber for the device.

In witness whereof I affix my signature. 20

ALLEN C. BRANTINGI-IAM.

It is hereby certified that in Letters Patent No. 1,207,847, granted 1 )ncemhnr 12,

1916, upon the application 01' Alien C. Brautinghem, of 'lulmin, ()hin, for an improvement in Self-Balancing Sifters, errors appear in the printed speciiimitimi requiring correction as follows: Page .2, lines 82-83, strike out 1i|e words mi adjustable and insert the article a; same page and claim. line H4, strike out the article a and insert the Words an adjustable; and that the said Letters Patent should he read with these corrections therein that the same may uiziferm to the record of the case in the Patent Oflice.

Signed and sealed this 13th day of March, A. D., 1917.

F. W. 1]. CLAY,

Acting Oommiuioner of Patent.

[BILL] 

